/*
	This file is part of cpp-ethereum.
	cpp-ethereum is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.
	cpp-ethereum is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.
	You should have received a copy of the GNU General Public License
	along with cpp-ethereum.  If not, see <http://www.gnu.org/licenses/>.
*/
/** @file TrieHash.h
 * @author Gav Wood <i@gavwood.com>
 * @date 2014
 */
// adapted from https://github.com/ethereum/cpp-ethereum/blob/develop/libdevcore/TrieHash.h

#ifndef __TRIEHASH_H__
#define __TRIEHASH_H__

#include <array>
#include <list>
#include <unordered_map>

#include "depends/common/FixedHash.h"
#include "common/Constants.h"

namespace dev
{
    bytes rlp256(BytesMap const& _s);
    h256 hash256(BytesMap const& _s);

    h256 orderedTrieRoot(std::vector<bytes> const& _data);

    template <class T, class U> inline h256 trieRootOver(unsigned _itemCount, T const & _getKey, U const & _getValue)
    {
        BytesMap m;
        for (unsigned i = 0; i < _itemCount; ++i)
        {
            m[_getKey(i)] = _getValue(i);
        }
        return hash256(m);
    }

    h256 orderedTrieRoot(std::vector<bytesConstRef> const& _data);
    h256 orderedTrieRoot(std::vector<bytes> const& _data);
}

#endif // __TRIEHASH_H__
